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Related to Diamagnetic: Diamagnetic levitation


Having a magnetic permeability less than 1; materials with this property are repelled by a magnet and tend to position themselves at right angles to magnetic lines of force.



a substance that becomes magnetized against the direction of an external magnetic field. In the absence of an external magnetic field a diamagnetic is nonmagnetic. Upon exposure to an external magnetic field each atom of a diamagnetic acquires a magnetic moment j (each mole of the substance acquires a total moment J) proportional to the field intensity H and directed against the field. Therefore, the magnetic susceptibility x = J/H is always negative for diamagnetics. The diamagnetic susceptibility χ is small with respect to absolute magnitude and is weakly dependent on both the magnetic field intensity and the temperature (seeTable 1, where xis the susceptibility of 1 mole).

Table 1. Magnetic susceptibility of certain diamagnetics (under normal conditions)
 X x 10-6
Nitrogen (N2)...............-12.0
Hydrogen (H2)...............-4.0
Germanium (Ge)...............-7.7
Silicon (Si)...............-3.1
Water, liquid (H2O)...............-13.0
Table salt (NaCI)...............-30.3
Acetone (C3H6O)...............-33.8
Glycerol (C3H8O3)...............-57.1
Naphthalene (C12H8)...............-91.8(avg.)

Diamagnetics include silicon, phosphurus, bismuth, zinc, copper, gold, silver, the inert gases, nitrogen, and hydrogen. Many organic and inorganic compounds are diamagnetic.

References in periodicals archive ?
In order to avoid using superconductors, as we have mentioned its drawbacks in the introduction, we can reduce the magnetic hose by using a diamagnetic shell whose permeability is smaller than 1 but not necessarily very close to zero and a paramagnetic core whose permeability is larger than 1 but not necessarily infinitely large.
Compared to real HTS bulk, the flux lines in a perfect diamagnetic behavior of the HTS bulk is totally rejected from the HTS bulk and the flux lines are tangential to the surface of the bulk.
Here, we're using the diamagnetic force to balance gravity instead of centrifugal force.
Generally, square planar Ni(II) complexes are diamagnetic while tetrahedral complexes have moments in the range 3.
A handful of common metals are the superstars of magnetism, but all materials are influenced to some degree or another by magnetic fields, and can be divided according to their response to externally applied magnetic fields as diamagnetic, paramagnetic, or ferromagnetic.
As seen from this figure, samples 1 and 3 have diamagnetic behavior which increases slightly with the increasing water content in the gel, so does the mass of the gel.
Susceptibility reflects the contributions of all the minerals in the sample, either if they are diamagnetic (for example calcite), paramagnetic (clays) or ferromagnetic (many iron oxides).
The aim of the present work is the formation, in the diamagnetic matrix, of singledomain ferromagnetic particles.
The diamagnetism of water (medium solution) and yeast, the liquid surface distinctly inclined under gradient magnetic fields, and the hydrostatic force in suspension was strengthened by the diamagnetic forces.
According to Boone these monopoles exert diamagnetic pressure on the fields of atmospheric elements.
Haemoglobin is diamagnetic when oxygenated but paramagnetic when deoxygenated, resulting in BOLD contrast, given the use of an appropriate magnetic resonance pulse sequence (T2- or [T2.
Fine Shungit powder is characterized by heat conductivity, heat capacity, electric conductivity and diamagnetic properties, and microwave absorption effect.